IndexedDB: Switch key/value handling from vector<char> to std::string

content/browser/indexed_db/indexed_db_backing_store_unittest.cc

Index: content/browser/indexed_db/indexed_db_backing_store_unittest.cc
diff --git a/content/browser/indexed_db/indexed_db_backing_store_unittest.cc b/content/browser/indexed_db/indexed_db_backing_store_unittest.cc
index 2a49de4fe76bb85f64b5035a22dc310512a54071..d9c95bba4bb0a2f78147f07f0072196e00566c1b 100644
--- a/content/browser/indexed_db/indexed_db_backing_store_unittest.cc
+++ b/content/browser/indexed_db/indexed_db_backing_store_unittest.cc
@@ -51,9 +51,9 @@ class IndexedDBBackingStoreTest : public testing::Test {
   IndexedDBKey m_key1;
   IndexedDBKey m_key2;
   IndexedDBKey m_key3;
-  std::vector<char> m_value1;
-  std::vector<char> m_value2;
-  std::vector<char> m_value3;
+  std::string m_value1;
+  std::string m_value2;
+  std::string m_value3;
 };
 
 TEST_F(IndexedDBBackingStoreTest, PutGetConsistency) {
@@ -70,7 +70,7 @@ TEST_F(IndexedDBBackingStoreTest, PutGetConsistency) {
   {
     IndexedDBBackingStore::Transaction transaction2(backing_store_);
     transaction2.Begin();
-    std::vector<char> result_value;
+    std::string result_value;
     bool ok =
         backing_store_->GetRecord(&transaction2, 1, 1, m_key1, &result_value);
     transaction2.Commit();
@@ -90,7 +90,7 @@ TEST_F(IndexedDBBackingStoreTest, HighIds) {
   const int64 invalid_high_index_id = 1ULL << 37;
 
   const IndexedDBKey& index_key = m_key2;
-  std::vector<char> index_key_raw;
+  std::string index_key_raw;
   EncodeIDBKey(index_key, &index_key_raw);
   {
     IndexedDBBackingStore::Transaction transaction1(backing_store_);
@@ -127,7 +127,7 @@ TEST_F(IndexedDBBackingStoreTest, HighIds) {
   {
     IndexedDBBackingStore::Transaction transaction2(backing_store_);
     transaction2.Begin();
-    std::vector<char> result_value;
+    std::string result_value;
     bool ok = backing_store_->GetRecord(&transaction2,
                                         high_database_id,
                                         high_object_store_id,
@@ -167,7 +167,7 @@ TEST_F(IndexedDBBackingStoreTest, InvalidIds) {
   const int64 index_id = kMinimumIndexId;
   const int64 invalid_low_index_id = 19;  // index_ids must be > kMinimumIndexId
 
-  std::vector<char> result_value;
+  std::string result_value;
 
   IndexedDBBackingStore::Transaction transaction1(backing_store_);
   transaction1.Begin();